Instructions for use
The Public Transport AnalysisEnvironment Settings window is used to set some global parameters of the Public Transport Analysis. The "Environment Settings" check box in the Execute group is used to control the display and hiding of the Environment Settings panel.
Public Transport AnalysisEnvironment Settings is the premise of bus Check Data and bus data analysis. You can set the station environment, line environment, transit relationship, and other parameters, such as Station Snap Tolerance, merge tolerance, etc.
LineEnvironment Settings
Set the information about the Line data, including the Dataset to which the Line belongs, the LineID Field, the name field, and the fields of some other auxiliary information of the line. Fields marked with * are required, and other fields are optional.
| No. | Field | Description | Type |
| 1 | Line Name Field | Set up the Bus Line Name Field. This field is mandatory. If the field does not exist in the line Dataset, an exception is thrown. | Required field |
| 2 | Line ID Field | Set the LineID Field. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the line Dataset or the Type does not match, an exception is thrown. | Required field |
| 3 | Line Alias Field | Set the bus Line Alias Field. | Optional field |
| 4 | Line Type Field | Set the field that identifies the Line type. The Type is required to be integral. The specified field value is 0 for buses, 1 for subways and 2 for trolleybuses. | Optional field |
| 5 | Speed Field | Set the bus travel speed field. | Optional field |
| 6 | Line Length Field | Sets the length field of the Line. | Optional field |
| 7 | First Time Field | Set the field of the first departure time of Line. | Optional field |
| 8 | Last Departure Time: | Set the Line last train departure time field. | Optional field |
| 9 | Interval Field | Set the Line Interval Field. | Optional field |
Bus Stop Environment Settings
Set the relevant information of the bus station data, including the Dataset (i.e. Bus Station Dataset) to which the bus station belongs, the station ID Field, the Station Name Field, and the bus Station Alias Field. A StopSetting object must be specified in the Public Transport AnalysisEnvironment Settings, and the object must have the correct parameters set, otherwise the correctness of Check Data and data loading may be affected.
| No. | Field | Description | Type |
| 1 | Station Dataset | Set the Dataset to which the bus stop belongs. Dataset Type is required to be Point Dataset. If the Dataset Type is not set or specified as something else, an exception is thrown. | Required field |
| 2 | Station Name Field | Set the bus Station Name Field. This field is mandatory. If the field does not exist in the Station Dataset, an exception is thrown. | Required field |
| 3 | Station Alias Field | Set the bus Station Alias Field. | Optional field |
| 4 | Station ID Field | Set the Bus Station ID Field in the Bus Station Dataset. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the Station Dataset or the Type does not match, an exception is thrown. | Required field |
Relation Settings
Set up information about the station and circuit Relation Dataset. A Relation Dataset must be specified in the Public Transport AnalysisEnvironment Settings, The Dataset must specify the correct relation Dataset between the bus stop and the line, the station ID Field and the line ID Field. Otherwise, the correctness of Check Data and data loading may be affected.
| No. | Field | Description | Type |
| 1 | Relation Datasouce | Set the Datasource that holds the Relation Dataset. | Required field |
| 2 | Relation Dataset | Set Bus Stop and Line Relation Dataset. Dataset Type is required to be a pure table type. If the Dataset Type is not set or specified as something else, an exception is thrown. | Required field |
| 3 | Line ID Field | Set the line ID Field in the site and line Relation Dataset. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the site-to-line Relation Dataset or the Type does not match, an exception is thrown. | Required field |
| 4 | Station ID Field | Set the Station ID Field in the Relation Dataset between the station and the line. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the site-to-line Relation Dataset or the Type does not match, an exception is thrown. | Required field |
| 5 | Station Order Fields | Set the field that stores the sequence number of the station in the line (that is, the station in the line) in the Relation Dataset between the station and the line. | Optional field |
Exit Settings
Set the relationship parameters between the station and the main entrance. Exit Dataset is optional data, which can be set according to the actual situation of the study.
| No. | Field | Description | Type |
| 1 | Exit Dataset | Set up sites and entrances and exits Relation Dataset. Dataset Type is required to be Line Dataset. If the specified Dataset Type is any other type, an exception is thrown. | Optional field |
| 2 | Exit Name Field | Gets or sets the Exit Name Field in the Site and Gate Relation Dataset. | Optional field |
| 3 | Exit Name PY Field | Gets or sets the Exit Name PY Field in the Site and Portal Relation Dataset. | Optional field |
| 4 | Exit ID Field | Gets or sets the Exit ID Field in the Site and Gate Relation Dataset. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the site-to-line Relation Dataset or the Type does not match, an exception is thrown. | Optional field |
| 5 | Station ID Field | Gets or sets the Station ID Field in the Relation Dataset for stations and gates. This field is mandatory and requires the Type to be Int or Long. If the field does not exist in the site-to-line Relation Dataset or the Type does not match, an exception is thrown. | Optional field |
Walking Settings
Through the Walking Settings, the system will calculate the walking distance according to the line object. If the Step Parameter Settings is not performed, the straight-line distance will be used to represent the walking distance.
| No. | Field | Description | Type |
| 1 | Walk Dataset | Set the Walk Dataset, which is the Network Dataset. According to the information of arcs and nodes of Network Dataset, the actual walking route of transfer is obtained. | Optional field |
| 2 | Start Node ID | Set the field of the starting Node ID of the arc segment in Network Dataset. | Optional field |
| 3 | End Node ID Field | Set the field of the Node ID of the arc segment termination in the Network Dataset. | Optional field |
| 4 | Node ID Field | Set the field for the Node ID in the network Dataset. | Optional field |
| 5 | Segment ID | Set the Edge ID Field in the Network Dataset. | Optional field |
Tolerance Settings
- Station Snap Tolerance: Station Snap Tolerance is used to determine whether the station is on the line. When determining the relationship between the bus stop and the line, the system first judges the corresponding relationship between the bus stop and the line according to the bus stop and Relation Dataset, and then makes further exclusion according to the Station Snap Tolerance. It is not considered to be a station on the line. As shown in the
figure below, according to the Relation Dataset between the bus station and the line, the stations 107 and 106 are located on the line 1, assuming that the Station Snap Tolerance is 5 meters, but in the Station Dataset and the line Dataset, Station 107 is 10 meters from Line1, which is greater than Station Snap Tolerance, then station 107 is considered not to be on Line1. The reason for this may be that the data measurement is not accurate. If the error is large, the error caused by not excluding the point may be greater than that caused by excluding the point. It may also be that the record in the Relation Dataset between the station and the line is incorrect.
Figure 1: Station Snap Tolerance. - Max Walking Distance: The transfer of Public Transport Transfer needs to be carried out at the bus stop. There are two types of transfer. The first type is that the stops of two buses overlap at one point. Passengers can get off from the first bus and transfer to the second bus without moving. In the second case, passengers need to walk from one station to another for transfer, and Max Walking Distance is the acceptable walking Max Distance for travelers to transfer. If the walking distance in the transfer analysis scheme exceeds this threshold, the scheme will be abandoned.
- Unit: Click the drop-down menu on the right side of the setting box to set the units of Station Snap Tolerance and walking distance.
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